<html>
<head>
    <meta charset='UTF-8'>
    <title>text</title>
</head>
<body>
<div>
parent.html content
</div>
<hr>
<h2>child1-1</h2>
@space(child1-1)
<h2>child1-2</h2>
@space(child1-2)
<hr>
@include(child2)
</body>
</html>